Model of Fractal Particles of Hydrated Zirconium Dioxide, Based on Small-Angle Neutron Scattering Data

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Model of Fractal Particles of Hydrated Zirconium Dioxide, Based on Small-Angle Neutron Scattering Data. / Azarova, L. A.; Kopitsa, G. P.; Iashina, E. G.; Garamus, V. M.; Grigoriev, S. V.

In: Journal of Surface Investigation, Vol. 13, No. 5, 01.09.2019, p. 908-913.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{23651e75b955417faced2e8240df84f2,

title = "Model of Fractal Particles of Hydrated Zirconium Dioxide, Based on Small-Angle Neutron Scattering Data",

abstract = "Abstract: The parameters of the mesostructure of amorphous zirconium dioxide and their evolution at different stages of heat treatment are determined by small-angle neutron scattering. Particles of amorphous zirconium dioxide, which form mass fractals with the dimension Dv = 2.21, are rearranged into surface fractals with a surface dimension of Ds = 2.52 upon annealing at a temperature of 400°C or higher. In the resulting system, a shell with a fractal structure is formed over a dense core (a cluster of nanoparticles of zirconium dioxide with a constant density). Transformation of the fractal system from a mass fractal into a surface one is characterized by the appearance of a core, and its growth is due to the crystallization of hydrated zirconia particles at high temperatures. A model for the formation of a fractal particle, implying the existence of a core–shell surface fractal system, is proposed. The characteristic radius of ZrO2 nanoparticles increases from 14 to 200 {\AA} with an increase in the annealing temperature from 400 to 600°C.",

keywords = "mass fractal, small-angle neutron scattering, surface fractal, zirconium dioxide",

author = "Azarova, {L. A.} and Kopitsa, {G. P.} and Iashina, {E. G.} and Garamus, {V. M.} and Grigoriev, {S. V.}",

note = "Publisher Copyright: {\textcopyright} 2019, Pleiades Publishing, Ltd.",

year = "2019",

month = sep,

day = "1",

doi = "10.1134/S1027451019050215",

language = "English",

volume = "13",

pages = "908--913",

journal = "ПОВЕРХНОСТЬ. РЕНТГЕНОВСКИЕ, СИНХРОТРОННЫЕ И НЕЙТРОННЫЕ ИССЛЕДОВАНИЯ",

issn = "1027-4510",

publisher = "МАИК {"}Наука/Интерпериодика{"}",

number = "5",

}

RIS

TY - JOUR

T1 - Model of Fractal Particles of Hydrated Zirconium Dioxide, Based on Small-Angle Neutron Scattering Data

AU - Azarova, L. A.

AU - Kopitsa, G. P.

AU - Iashina, E. G.

AU - Garamus, V. M.

AU - Grigoriev, S. V.

PY - 2019/9/1

Y1 - 2019/9/1

N2 - Abstract: The parameters of the mesostructure of amorphous zirconium dioxide and their evolution at different stages of heat treatment are determined by small-angle neutron scattering. Particles of amorphous zirconium dioxide, which form mass fractals with the dimension Dv = 2.21, are rearranged into surface fractals with a surface dimension of Ds = 2.52 upon annealing at a temperature of 400°C or higher. In the resulting system, a shell with a fractal structure is formed over a dense core (a cluster of nanoparticles of zirconium dioxide with a constant density). Transformation of the fractal system from a mass fractal into a surface one is characterized by the appearance of a core, and its growth is due to the crystallization of hydrated zirconia particles at high temperatures. A model for the formation of a fractal particle, implying the existence of a core–shell surface fractal system, is proposed. The characteristic radius of ZrO2 nanoparticles increases from 14 to 200 Å with an increase in the annealing temperature from 400 to 600°C.

AB - Abstract: The parameters of the mesostructure of amorphous zirconium dioxide and their evolution at different stages of heat treatment are determined by small-angle neutron scattering. Particles of amorphous zirconium dioxide, which form mass fractals with the dimension Dv = 2.21, are rearranged into surface fractals with a surface dimension of Ds = 2.52 upon annealing at a temperature of 400°C or higher. In the resulting system, a shell with a fractal structure is formed over a dense core (a cluster of nanoparticles of zirconium dioxide with a constant density). Transformation of the fractal system from a mass fractal into a surface one is characterized by the appearance of a core, and its growth is due to the crystallization of hydrated zirconia particles at high temperatures. A model for the formation of a fractal particle, implying the existence of a core–shell surface fractal system, is proposed. The characteristic radius of ZrO2 nanoparticles increases from 14 to 200 Å with an increase in the annealing temperature from 400 to 600°C.

KW - mass fractal

KW - small-angle neutron scattering

KW - surface fractal

KW - zirconium dioxide

UR - http://www.scopus.com/inward/record.url?scp=85073611491&partnerID=8YFLogxK

U2 - 10.1134/S1027451019050215

DO - 10.1134/S1027451019050215

M3 - Article

AN - SCOPUS:85073611491

VL - 13

SP - 908

EP - 913

JO - ПОВЕРХНОСТЬ. РЕНТГЕНОВСКИЕ, СИНХРОТРОННЫЕ И НЕЙТРОННЫЕ ИССЛЕДОВАНИЯ

JF - ПОВЕРХНОСТЬ. РЕНТГЕНОВСКИЕ, СИНХРОТРОННЫЕ И НЕЙТРОННЫЕ ИССЛЕДОВАНИЯ

SN - 1027-4510

IS - 5

ER -

ID: 85653701